JP6915957B2 - A suction tool with a rotating brush and a vacuum cleaner with it - Google Patents

Description

The present invention relates to a suction device equipped with a rotating brush and a vacuum cleaner provided with the suction tool.

So far, in a rotating brush provided in a suction tool of an electric vacuum cleaner, a structure having a groove for providing a brush or the like in a cylindrical rotating member (rotary core) has been proposed. (See, for example, Patent Document 1)

Japanese Unexamined Patent Publication No. 2004-358116

However, in the rotary brush described in Patent Document 1, when developing a suction tool having a different width, it is necessary to newly create a rotary core having a different length according to the width of the suction tool. However, it is not easy to create a rotary core with a groove in the longitudinal direction for inserting the brush member constituting the rotary brush. Also, it is not particularly easy to create a grooved rotary core with a twist. Not only does manufacturing cost worsen by investing in molds only because of the same cross-sectional shape but different lengths, but also parts cannot be standardized, and there is a risk of problems such as incorrect assembly occurring in the assembly process. The production efficiency deteriorates.

An object of the present invention is to provide rotating brushes having different lengths, which are compatible with a wide variety of suction tools and have standardized (shared) parts without deteriorating production efficiency.

A cylindrical member that is rotatably attached to a device having an electric motor, and one rotary core that is located at the center of the rotating brush shaft and one end of which is attached to the device so that the driving force of the electric motor is applied, and an extended rotary core. The rotary core comprises a groove, at least one or more brushes that are locked by insertion into the groove, a first notch, and a first rib, the extension rotary. The core has a brush cover portion and a groove extension portion, and the groove extension portion has an extension groove, a second rib, and a second notch, and has the second rib. The extension rotary core is connected by connecting the extension groove of the extension rotary core and the groove of the rotary core by fitting the second notch with the first notch and the first rib, respectively. Is a rotary brush connected to the other end of the rotary core, the extension rotary core has a shorter length than the rotary core, and the extension rotary core is from the other end of the rotary core. A rotating brush that is removable.

According to the present invention, it is possible to provide rotating brushes having different lengths, which are compatible with a wide variety of suction tools and have standardized (shared) parts without deteriorating production efficiency.

It is an external perspective view which shows the whole of the electric vacuum cleaner which concerns on this invention. It is a top view of the suction tool of Example 1. It is a bottom view of the suction tool of Example 1. It is a top view of the state in which the upper part of the mouthpiece body of the suction tool of Example 1 is removed. FIG. 2 is a cross-sectional view taken along the line BB when the suction tool shown in FIG. 2 is advanced. It is a front view of the 1st rotary cleaning body. It is a figure of the end face of a rotary core and an extension rotary core. It is a connection diagram of a rotary core and an extension rotary core. FIG. 2 is a cross-sectional view taken along the line AA of the suction tool shown in FIG. FIG. 8 is a cross-sectional view taken along the line DD of the suction tool shown in FIG.

Hereinafter, the first embodiment according to the present invention will be described with reference to the drawings.
FIG. 1 shows an external view of the vacuum cleaner according to the first embodiment of the present invention. The vacuum cleaner 1 is composed of a vacuum cleaner main body 2, an operation pipe 4 connected to a hose portion 3 and provided with a hand operation switch SW and the like, an extension pipe 5 provided so as to be expandable, and a mouthpiece 6. ing.

The vacuum cleaner main body 2 includes an electric blower 2a that generates a suction force, a dust collector 2b that stores the dust collected by the suction force of the electric blower 2a, and the like. In this embodiment, a so-called cyclone type vacuum cleaner will be described as an example, but it may be applied to a so-called paper pack type vacuum cleaner.

One end of the hose portion 3 is connected to the connection port 2c of the vacuum cleaner main body 2 so as to communicate with the dust collecting portion 2b of the vacuum cleaner main body 2. The other end of the hose portion 3 is connected to one end of the operation pipe 4.

The operation tube 4 includes a handle 4a provided with a hand operation switch SW and the like, a power supply terminal (not shown) for supplying power from the vacuum cleaner main body 2. An energizing terminal (not shown) provided at one end of the extension pipe 5 is connected to the power feeding terminal.

By operating the hand operation switch SW of the operation pipe 4, it is possible to operate and stop the electric blower 2a, switch between strong, medium and weak, and operate and stop the electric motor 40 (see FIG. 4) provided in the mouthpiece 6. ing.

The extension pipe 5 includes an outer pipe 5a and an inner pipe 5b, and one end of the inner pipe 5b is inserted into the other end of the outer pipe 5a to be provided inside the outer pipe 5a and the inner pipe 5b (not shown). The ventilation passages are connected so as to communicate with each other, and are configured to be expandable and contractible. Note that FIG. 1 illustrates the shortest state of the extension pipe 5.

FIG. 2 is a top view of the mouthpiece.

As shown in FIG. 2, the suction tool 6 includes a mouthpiece case 10 having a substantially T-shape when viewed from above, and a mouthpiece joint 13 connected to the mouthpiece case 10.

The mouthpiece case 10 includes a mouthpiece body 11 formed elongated in the left-right direction (width direction) and a connecting portion 12 connected to the mouthpiece joint 13 at the center of the mouthpiece body 11 in the left-right direction in a top view. .. The connecting portion 12 is formed with a flow path R (see FIG. 3) for communicating the mouthpiece main body 11 and the mouthpiece joint 13.

The mouthpiece main body 11 is provided with bumpers 11a from the front end surface to the left and right side surfaces. The bumper 11a is formed of an elastic material such as rubber or elastomer to ensure airtightness inside the mouthpiece body 11 during use, and the mouthpiece body 11 collides with furniture or the like when the vacuum cleaner 1 (see FIG. 1) is used. At that time, it plays a role of a cushioning material for preventing damage to the furniture and the like and absorbing an impact on the mouthpiece main body 11.

The mouthpiece joint 13 includes a first connecting portion 14 that is rotatably connected to the connecting portion 12, and a second connecting portion 15 that is rotatably connected to the first connecting portion 14. There is.

The first connecting portion 14 has a substantially half-track shape in the top view of FIG. 2, and has a cylindrical shaft 14a connected to the connecting portion 12. The shaft 14a is supported by a bearing portion 12g (see FIG. 4) whose axial direction is the left-right direction of the mouthpiece main body 11 and both ends of the shaft 14a are formed in the connecting portion 12. Further, the first connecting portion 14 is configured to be rotatable (in the vertical direction) from a state substantially parallel to a state to be substantially parallel to the surface to be cleaned (cleaning surface) M (see FIG. 5). There is. That is, by rotating the first connecting portion 14 with respect to the mouthpiece case 10 with the shaft 14a as a fulcrum, the extension pipe 5 (see FIG. 1) is substantially parallel to the surface to be cleaned M (see FIG. 5). It can be rotated between the vertical state and the vertical state.

The second connecting portion 15 is configured to be rotatable with respect to the first connecting portion 14 in the left-right direction of the mouthpiece main body 11 (clockwise and counterclockwise in FIG. 2). Thereby, for example, the extension pipe 5 can be tilted from a state in which the extension pipe 5 is substantially perpendicular to the surface to be cleaned M to a state in which the extension pipe 5 is substantially parallel to the surface to be cleaned M.

Further, the second connecting portion 15 is provided with a power feeding terminal 15a on which power is supplied. In the vacuum cleaner 1 (see FIG. 1) of the present embodiment, the electric power to be supplied to the mouthpiece 6 is configured to be supplied from the vacuum cleaner main body 2 through the hose portion 3, the operation pipe 4, and the extension pipe 5. There is.

In such a mouthpiece joint 13, for example, in a state where the extension pipe 5 (see FIG. 1) is substantially perpendicular to the surface to be cleaned M, the extension pipe 5 is tilted in the left-right direction (left-right direction), and the operation pipe 4 is formed. By twisting (grip 4a) in either the left-right direction, the mouthpiece main body 11 can be rotated by approximately 90 degrees in any of the left-right directions, and cleaning can be performed with the left-right direction of the mouthpiece main body 11 in the moving direction. Therefore, the mouthpiece 6 can be moved along the wall for cleaning, or the mouthpiece 6 can be inserted into a narrow gap for cleaning.

FIG. 3 is a bottom view of the mouthpiece.

As shown in FIG. 3, the mouthpiece 6 includes a first rotary cleaning body 20 and a second rotary cleaning body 30. The mouthpiece case 10 (mouthpiece body 11) is formed with a brush chamber Q having an opening on the lower surface (the surface facing the cleaning surface) and an airtight chamber P having an opening (suction port) on the lower surface. ..

The first rotary cleaning body 20 is arranged on the front side in the front-rear direction along the left-right direction of the mouthpiece main body 11, and is rotatably supported in the brush chamber Q. Further, the first rotary cleaning body 20 is continuously provided from one end side to the other end side in the left-right direction (axial direction of the first rotary cleaning body 20) of the mouthpiece main body 11.

FIG. 6 is a front view of the first rotary cleaning body.

As shown in FIG. 6, the first rotary cleaning body 20 is provided on a plurality of types of brushes 20a and 20b, such as a rotary core 21 located at the center of the axis of the first rotary cleaning body 20, brushes having different hardness, and end portions. It is composed of a clutch 22 and an extension rotary core 23.

The rotary core 21 has a groove 21c and a notch 21a and a rib 21b at the other end of the groove 21c. A clutch 22 is provided at one end of the rotary core 21. The clutch 22 is a member for transmitting the driving force of the electric motor 40 to the rotary core 21 via the toothed belt 41.

The extension rotary core 23 has a brush cover portion 23a and a groove extension portion 23b, and the groove extension portion 23b is provided with an extension groove 23c, a rib 23d shown in FIG. 7, and a notch 23e. By fitting the ribs 23d and the notch 23e with the notches 21a and the ribs 21b provided in the rotary core 21, the extension rotary core 23 is connected to the rotary core 21 so that the groove 21c and the extension groove 23c are connected. , These fittings prevent the rotary core 21 and the extended rotary core 23 from idling (FIG. 8).

In the present embodiment, a clutch 22 is provided at one end of the rotary core 21 to which the driving force of the electric motor 40 is applied, instead of the extension rotary core 23, thereby reducing the force applied to the connecting portion between the rotary core 21 and the extension rotary core 23. is doing.

In the present embodiment, the case where four ribs 23d and four notches 23e are provided is shown as an example, but the present invention is not limited to this, and the notches 21a and ribs 21b provided in the rotary core 21 are not limited thereto. Depending on the combination with, the number may be 3 or less, or 5 or more.

The brushes 20a and 20b are locked by the grooves 21c and the extension grooves 23c provided in the rotary core 21 and the extension rotary core 23, respectively, and are arranged spirally with respect to the axial direction of the rotary core 21.

In the present embodiment, the case where two types of brushes 20a and 20b are arranged has been described as an example, but the present invention is not limited to this, and three or more types may be arranged in a spiral shape. A configuration may be added in which blade members made of an elastic material such as rubber are spirally arranged between the brushes, which can be appropriately changed.

Further, by removing the extension rotary core 23 and attaching another member, the first rotary cleaning body can be easily changed according to the cleaning situation. For example, by attaching a member provided with a roller made of a hard brush or the like instead of the groove extension portion of the extension rotary core, the area to be cleaned is narrowed with respect to the cleaning surface M, while the suction tool. The feeling of operation can be lightened. This is suitable for cleaning long-haired carpets with high resistance on the floor.

The second rotary cleaning body 30 has a diameter smaller than the diameter of the first rotary cleaning body 20, is covered with a brush body, and is arranged rearward and parallel to the first rotary cleaning body 20. Further, the second rotary cleaning body 30 is continuously provided from one end side to the other end side in the left-right direction of the mouthpiece main body 11 in parallel with the axial direction of the first rotary cleaning body 20.

Further, the second rotary cleaning body 30 has a shaft portion 30a (shaft) parallel to the rotary shaft 21 of the first rotary cleaning body 20, and the shaft portion 30a is rotatably supported by the mouthpiece case 10 (mouthpiece body 11). Has been done. The second rotary cleaning body 30 is not driven by an electric motor, but is configured to rotate by a frictional force with the surface to be cleaned M (see FIG. 5) when the mouthpiece 6 is moved. Is. As described above, since the second rotary cleaning body 30 is supported by the mouthpiece main body 11 via the shaft portion 30a, the configuration of the second rotary cleaning body 30 can be simplified.

The mouthpiece 6 is provided with a brush drive switch 16, wheels 17, and bearing holding members 31 and 32 on the lower surface of the connecting portion 12 of the mouthpiece case 10.

The brush drive switch 16 is a switch that detects whether or not the lower surface of the mouthpiece 6 is in contact with the surface to be cleaned M (cleaning surface), and is configured together with the wheels 16a. The wheel 16a is provided so that a part of the wheel 16a always protrudes from the lower surface of the mouthpiece case 10 (connecting portion 12) by an urging means such as a spring. Then, when it is detected that the wheel 16a protrudes from the mouthpiece case 10 and is not in contact with the surface to be cleaned M, the motor 40 (see FIG. 4) is driven by the control of the circuit board 50 (control board) (see FIG. 4). Is stopped, and the rotation of the first rotary cleaning body 20 is stopped. When it is detected that the wheel 16a is pushed in and is in contact with the surface to be cleaned M, the electric motor 40 is driven by the control of the circuit board 50, and the first rotary cleaning body 20 rotates.

The wheel 17 receives the stress of the back-and-forth movement and the rotation operation operated by the operation pipe 4 to bring the bottom surface of the mouthpiece 6 into close contact with the surface to be cleaned (cleaning surface), thereby improving the operation performance of the mouthpiece 6. have.

The bearing holding member 31 supports one end of the rotary shaft of the first rotary cleaning body 20 and the shaft portion 30a of the second rotary cleaning body 30, and is fixed to the mouthpiece case 10 with a screw.

The bearing holding member 32 supports the rotation shaft of the first rotary cleaning body 20 and the other end of the shaft portion 30a of the second rotary cleaning body 30, and locks the suction case 10 so that it can be removed (FIG. FIG. It is fixed using (not shown).

FIG. 4 is a top view of the mouthpiece body with the upper portion of the mouthpiece case 10 removed.

As shown in FIG. 4, the mouthpiece 6 is an electric motor 40 that drives the first rotary cleaning body 20 above the first rotary cleaning body 20 (see FIG. 3) and the second rotary cleaning body 30 (see FIG. 3). And a circuit board 50 for controlling the electric motor 40 is provided.

The electric motor 40 is attached to one end side of the mouthpiece main body 11 in the left-right direction. Further, the output shaft of the electric motor 40 is arranged parallel to the left-right direction of the mouthpiece main body 11. Further, the output shaft of the electric motor 40 extends toward one end side in the left-right direction, and is connected to the first rotary cleaning body 20 via a toothed belt 41 at one end portion (the end portion on the right side in the drawing) in the mouthpiece main body 11. Has been done.

The circuit board 50 is attached to the side opposite to the motor 40 in the left-right direction of the mouthpiece main body 11. Further, the circuit board 50 has a rectangular substrate whose long sides are arranged along the left-right direction, and is arranged in the mouthpiece main body 11 with the mounting surface facing upward in the vertical direction. The mounting surface is not necessarily limited to the vertical direction upward, and may be inclined with respect to the horizontal direction, or may be oriented in the front-rear direction (vertical direction).

FIG. 5 is a cross-sectional view taken along the line BB in FIG. In FIG. 5, 63 is a partition wall separating the brush chamber Q and the airtight chamber P, 64 is a cover member separating the second rotary cleaning body 30 and the airtight chamber P, and 60 is a flexible member that closes the gap between the cover member 64 and the cleaning surface M. It is a rear blade with sex. Further, FIG. 7 is a cross-sectional view taken along the line AA in FIG. In FIG. 7, reference numeral 62 denotes a flexible front blade that closes the gap between the front partition wall, the front partition wall, and the cleaning surface M (see FIG. 9).

The cover member 64 plays a role of improving the dust collecting performance of the suction tool by increasing the flow velocity of the suction air by covering a part of the suction port and narrowing the opening area, and at the same time increasing the negative pressure of the airtight chamber P. ..

The cover member 64 is formed into a suction tool by passing a shaft 65 through two concentric shaft holes 64a provided near the central portion in the left-right direction of the suction tool and fitting this with a claw 10a provided on the suction port case 10. It is connected (see Figure 9).

Hereinafter, a second embodiment according to the present invention will be described. Except for the configuration described below, the description is omitted because it is the same as the vacuum cleaner and the suction tool of the first embodiment.

FIG. 10 is a cross section taken along the line AA in FIG. A chamfer 23f is provided on the end surface of the extension groove 23c on the surface where the extension groove 23c of the extension rotary core 23 and the groove 21c of the rotary core 21 are connected. As a result, when the brush 20a inserted into the groove 21c from the rotary core 21 side (right side in FIG. 10) jumps into the extension groove 23c, it jumps in without resistance, and the assembling property is improved.

In this embodiment, the chamfer 23f has an inclined shape, but is not limited to this shape. The chamfer 23f may have a shape such as an R shape or a stepped shape that can be inserted from the rotary core 21 side to the extension rotary core 23 side without the brush being caught.

Hereinafter, a third embodiment according to the present invention will be described. Except for the configuration described below, the description is omitted because it is the same as the vacuum cleaner and the suction tool of the first and second embodiments.

It includes an extension rotary core 25 that fits between the rotary core 21 and the extension rotary core 23. The short extension rotary core 25 has a short extension portion 25a, ribs 25d1 and 25d2 at both ends thereof, and notches 25e1 and 25e2. The short extension portion 25a has a short extension groove 25c. The short extension rotary core 23 is shorter in length than the rotary core 21.

The rib 25d1 and the notch 25e1 are fitted with the notch 21a and the rib 21b of the rotary core 21. The rib 25d2 and the notch 25e2 are fitted with the notch 23e and the rib 23d of the extension rotary core 23. When the short rotary core 25 is fitted with the rotary core 21 or the extension rotary core 23, the groove 21c, the extension groove 23c, and the short extension groove 25c are connected to each other. As a result, the rotary core 21, the extension rotary core 23, and the short extension rotary core 25 are prevented from idling. By having the short extension rotary core 25, the rotary cores and rotating brushes having different lengths can be further created. It has the effect of making it easier.

A plurality of short extension rotary cores 23 may be connected instead of the rotary core 21. In that case, it is possible to create from a short rotary core to a long rotary core.

Although Examples 1 to 3 describe an example in which the extension rotary core is mounted on a suction tool having an electric motor 40, the present invention is not limited to this, and the extension rotary core can also be mounted on a suction tool having a rotating brush without an electric motor. ..

In Examples 1 to 3, the extended rotary core was used only for the first rotary cleaning body, but it can also be used for the second rotary cleaning body.

1 Vacuum cleaner 2 Vacuum cleaner body 2a Electric blower 2b Dust collector 6, mouthpiece 10 Suction case 20 1st rotary cleaner 30 2nd rotary cleaner 40 Motor 50 Circuit board (control board)
60 Rear blade 62 Front blade 64 Rear partition 63 Front partition M Cleaned surface (floor surface)
Q Brush room P Airtight room

Claims (4)

A cylindrical member that is rotatably attached to a device having an electric motor, one rotary core that is located at the center of the axis of the rotary brush and one end of which is attached to the device so that the driving force of the electric motor is applied, and an extended rotary core. And with
The rotary core has a groove, at least one or more brushes that are locked by insertion into the groove, a first notch, and a first rib.
The extension rotary core has a brush cover portion and a groove extension portion.
The groove extension portion has an extension groove, a second rib, and a second notch.
By fitting the second rib and the second notch with the first notch and the first rib, respectively, the extension groove of the extension rotary core and the groove of the rotary core are connected. This is a rotating brush in which the extended rotary core is connected to the other end of the rotary core.
The extended rotary core has a shorter length than the rotary core, and the length is shorter than that of the rotary core.
The extension rotary core is a rotating brush that can be removed from the other end of the rotary core. The rotary brush according to claim 1, wherein the end surface of the extension groove on the side where the extension rotary core is connected to the other end of the rotary core has a chamfered shape. The mouthpiece body, the rotating brush according to claim 1 or 2, an electric motor that transmits a driving force to the rotating brush via a belt, a brush chamber to which the rotating brush can be attached and detached, and a brush chamber located in parallel with the brush chamber. A suction tool having a suction port having an opening on the surface to be cleaned, and the belt is connected to one end side of the rotary core. An electric vacuum cleaner having an electric blower that generates suction force, a dust collector that collects dust, and a rotary brush according to claim 1 or 2.

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